From 2a3d79afa020dc49b0e2016b4015cdc94b74eec4 Mon Sep 17 00:00:00 2001 From: Frédéric Buclin Date: Wed, 16 Oct 2013 19:08:20 +0200 Subject: Bug 913904: (CVE-2013-1734) [SECURITY] CSRF when updating attachments r=dkl a=sgreen --- attachment.cgi | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'attachment.cgi') diff --git a/attachment.cgi b/attachment.cgi index 64f78dc36..0078a4c16 100755 --- a/attachment.cgi +++ b/attachment.cgi @@ -661,20 +661,23 @@ sub update { $attachment->set_filename(scalar $cgi->param('filename')); # Now make sure the attachment has not been edited since we loaded the page. - if (defined $cgi->param('delta_ts') - && $cgi->param('delta_ts') ne $attachment->modification_time) - { - ($vars->{'operations'}) = - Bugzilla::Bug::GetBugActivity($bug->id, $attachment->id, $cgi->param('delta_ts')); + my $delta_ts = $cgi->param('delta_ts'); + my $modification_time = $attachment->modification_time; - # The token contains the old modification_time. We need a new one. - $cgi->param('token', issue_hash_token([$attachment->id, $attachment->modification_time])); + if ($delta_ts && $delta_ts ne $modification_time) { + datetime_from($delta_ts) + or ThrowCodeError('invalid_timestamp', { timestamp => $delta_ts }); + ($vars->{'operations'}) = + Bugzilla::Bug::GetBugActivity($bug->id, $attachment->id, $delta_ts); # If the modification date changed but there is no entry in # the activity table, this means someone commented only. # In this case, there is no reason to midair. if (scalar(@{$vars->{'operations'}})) { - $cgi->param('delta_ts', $attachment->modification_time); + $cgi->param('delta_ts', $modification_time); + # The token contains the old modification_time. We need a new one. + $cgi->param('token', issue_hash_token([$attachment->id, $modification_time])); + $vars->{'attachment'} = $attachment; print $cgi->header(); -- cgit v1.2.3-24-g4f1b